president obama: i'm barack obama and... i approve this message. >>> we have got any math teachers out there? you can go ahead and look in this plan. and you'll see that the numbers work. i won't be running the okey-doek on you. >> that's president obama earlier and do we have this right now? we've got the live pictures coming in to us of vice president biden in ohio. that was president obama appearing in delray beach, florida, earlier this morning, starting now on the six-state post-debate swing. vice president biden, though, will be in ohio over the next three days. certainly we know ohio one of the most critical battleground states. more now on whether last night's debate changed the direction of the presidential race. joining me now, ron reagan, the son of the former president and a former radio talk show host and contributor and megan mccain, daughter of john mccain and a contributor of msnbc. i want to start with the grades of the candidates. last week, megan, you gave president obama a b and mitt romney a b-minus. did